import Vue from 'vue'
import axios from 'axios'
import { MessageBox, Message } from 'element-ui'
import store from '@/store'
import { getToken } from '@/utils/auth'

Vue.prototype.$axios = axios;

// create an axios instance
const service = axios.create({
    baseURL: '', // url = base url + request url
    // withCredentials: true, // send cookies when cross-domain requests
    timeout: 5000 // request timeout
})

// 请求拦截
// request interceptor
service.interceptors.request.use(
    config => {
        // do something before request is sent

        if (store.getters.token) {
            // let each request carry token
            // ['X-Token'] is a custom headers key
            // please modify it according to the actual situation
            config.headers['token'] = getToken()
        }
        return config
    },
    error => {
        // do something with request error
        console.log(error) // for debug
        return Promise.reject(error)
    }
)

// response interceptor
service.interceptors.response.use(
    /**
     * If you want to get http information such as headers or status
     * Please return  response => response
    */

    /**
     * Determine the request status by custom code
     * Here is just an example
     * You can also judge the status by HTTP Status Code
     */
    response => {
        // console.log(response)
        const res = response.data

        // if the custom code is not 20000, it is judged as an error.
        if (res.success !== true) {
            Message({
                message: res.message || 'Error',
                type: 'error',
                duration: 5 * 1000
            })

            // 50008: Illegal token; 50012: Other clients logged in; 50014: Token expired;
            if (res.code === 50008 || res.code === 50012 || res.code === 50014) {
                // to re-login
                MessageBox.confirm('你已被登出，可以取消继续留在该页面，或者重新登录', '确定登出', {
                    confirmButtonText: '重新登录',
                    cancelButtonText: '取消',
                    type: 'warning'
                }).then(() => {
                    store.dispatch('user/resetToken').then(() => {
                        location.reload()
                    })
                })
            }
            return Promise.reject(new Error(res.message || 'Error'))
        } else {
            return res
        }
    },
    error => {
        console.log('err' + error) // for debug
        Message({
            message: error.message,
            type: 'error',
            duration: 5 * 1000
        })
        return Promise.reject(error)
    }
)

export default service
